Effects of Melt-spinning on Microstructure and Hydrogen Storage Properties of Ti-V-Cr-Mn Alloy AITranslate

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1祁豆豆,林万明,张琦,李双寿.急冷对Ti_(0.32)Cr_(0.345)V_(0.25)Fe_(0.03)Mn_(0.055)合金储氢性能的影响[J].中国冶金,2017,27(10):23-26.

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Chinese Library Classification Number:TG139.7[一般工业技术—材料科学与工程]

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The effects were investigated of melt-spinning velocity on microstructure and hydrogen storage properties of 40Ti-40V-10Cr-10 Mn.The phase analysis shows that the original sample consists of V-based solid solution with body centered structure（BCC phase）.The melt-spun samples at 10 m/s and 30 m/s consist of BCC phase and C14-Laves phase.The melt-spun sample at 20m/s consists of BCC phase and C15-Laves phase.Kinetic mechanism research shows that hydrogen absorption kinetic process can be described by chemical reaction mechanism for the original sample and melt-spun samples at 10m/s and 30m/s and described by 3-D diffusion mechanism for the melt-spun sample at 20m/s.Moreover,with the increase of melt-spinning velocity,hydrogen absorption capacity of the sample at room temperature decreases at first and then increases,getting the minimum at 20 m/s.All the melt-spun samples have higher hydrogen desorption capacity at room temperature than the original sample,and the melt-spun sample at 10 m/s has the maximum with improved hydrogen absorption and desorption hysteresis.With melt-spinning velocity increasing,hydrogen desorption capacity of the sample at 373 Kfirstly decreases and then increases,getting the minimum at 20m/s,and the melt-spun sample at 10m/s and the original sample have the close value.